Care & Use1. If you want to heat liquid with the mug, pour in the liquid first and don’t heat the empty mug;2. Don't burn or heat a new unused mug, otherwise the coating would get damaged;3. Don't put the mug in cold water immediately after heating, other the coating could crack;4. Don't heat the liquid inside dry, otherwise the coating would get damaged;5. Wipe up the mug after washing to prevent the mug rim from rusting;6. Don't hit the mug, otherwise the coating could fall off;7. Don't put the mug in microwave oven.